A 7.7 V power supply is connected to a 79 Ohm resistor and a 87 Ohm resistor in parallel. What is the total current through the circuit? Round your answer to 2 decimal places.

Answers

Answer 1

The total current through the circuit is 0. 19A

How to determine the current

We have the formula for power to be;

Current, I = V/R

Voltage = 7. 7V

Resistance in parallel = R1R2/ R1 + r2

Resistance in parallel = [tex]\frac{79 * 87}{87 + 79}[/tex] = [tex]\frac{6873}{166}[/tex] = 41. 40 Ohms

Current = [tex]\frac{7. 7}{41. 40}[/tex] = 0. 19 A

Thus, the total current through the circuit is 0. 19A

Learn more about voltage here:

https://brainly.com/question/14883923

#SPJ1


Related Questions

A 8. 43-newton force was applied for an unknown displacement; however, it is known that 376 joules of work was done. What is the value of the mystery displacement?(1 point).

Answers

Answer:

8.74 m

Explanation:

W = FΔx

376 = 43(Δx)

8.74 = Δx

Hey there everyone!

_____________________________________________________

Answer:

So, if you have the following to choose from:

O 368 m

O 44.6 m

O 384 m

O 3170 m

44.6 m (aka. Option B) is correct.

_______________________________________________________

Step By Step Explanation:

1. F = 8.43 N

2. W = 376 J

3. W = F x d

4. 376 J = 8.43 N × d

5. d = 44.6 m ← Our Final Solution

_______________________________________________________

Hope this helps! If you still need help on this, feel free to check out the flash cards I made below.

h t t p s : / / q u i z l e t . c o m / 7 6 4 3 6 7 9 6 0 / p h y s i c a l - s c i e n c e - 2 2 - f o r c e - a n d - w o r k - r e l a t i o n s h i p s - f l a s h - c a r d s / ? n e w

ApplyStreets A and L run parallel to each other. BoulevardN forms a 75° angle with Street L south of (below) theirintersection. What angle does Boulevard N make withStreet L north of (above) their intersection? Justifyyour answer.

Answers

The angle that Boulevard N makes with Street L north of their intersection is also 75°.

What is intersection?

Intersection is a point where two or more lines, curves, surfaces, or objects meet or cross each other. It is a common concept in mathematics, engineering, and everyday life. In mathematics, an intersection is a point where two or more sets of objects meet. In engineering, an intersection is a point where two or more roads, railways, or other transportation routes meet. In everyday life, an intersection is a point where two or more paths, streets, or other routes meet. Intersections are important in transportation, as they are the points where vehicles can change direction or turn around. Intersections are also important in mathematics, as they are the points where two or more lines, curves, or surfaces meet.

This is because the angle formed by two parallel lines is always equal. Since A and L run parallel to each other, the angle formed by Boulevard N and Street L south of their intersection is equal to the angle formed by Boulevard N and Street L north of their intersection. Therefore, the angle that Boulevard N makes with Street L north of their intersection is also 75°.

To learn more about intersection
https://brainly.com/question/29459409
#SPJ1

Mention and describe (6) examples in which physics has been used in daily life

Answers

Six examples in which Physics has been used in daily life include:

TransportationCommunicationsEnergy productionMedical imagingConstructionEntertainment

What are some uses of physics in daily life ?

Physics plays a major role in transportation, from the design of cars and airplanes to the operation of trains and buses. Physics is also used in communications, from the design of telephone networks to the operation of the internet.

Physics is used to generate energy from various sources, such as fossil fuels, nuclear power, hydroelectric power, and wind power. Physics is used in medical imaging, such as X-rays, CT scans, and MRI.

Physics plays a major role in construction, from the design of buildings and bridges to the materials used in construction.  Physics is also used in entertainment, from the design of amusement park rides to the operation of video games.

Find out more on the uses of physics at https://brainly.com/question/24517831

#SPJ1

If an object moves in a straight line direction that is northward, the only other direction that it can move is.

Answers

Due to its only being able to travel to and fro, if an item goes in a straight line northern, the only additional direction it may move is southward.

What is motion in a straight line?

Since linear motion consists of movement in one dimension in a straight line, also called as rectilinear motion, it may be analytically described only using just that spatial dimension.

The two forms of linear motion are non-uniform motion with changing velocity and non-zero acceleration.

Uniform linear motion is defined by a constant speed or no acceleration. A person moving linearly would sprint 100 m on a smooth path.

To know more about straight line motion do visit:

https://brainly.com/question/24728413

#SPJ4

A team of students performs an experiment to test the effect of gravity on different objects with the same mass. They measure how long it takes the
objects to fall from the top of the school's bleachers. How can they insure they get accurate data? (1 point)
O by dropping the objects in random order
O by repeating the experiment several times
O by dropping all the objects at once
O by using a high-tech stopwatch

Answers

The students can ensure accurate data, by repeating the experiment several times.

option B.

What is the accuracy of an experiment?

The accuracy of an experiment is how close the final result is to the correct or accepted value. The closer it is, the more accurate the experiment.

The accuracy of an experiment is obtained by performing the experiment repeatedly or many times.

Thus, for the team of students to obtain an accurate result on the effect of gravity on different objects with the same mass and  time it takes the

objects to fall from the top of the school's bleachers, they must perform the experiment many times.

Learn more about accuracy of experiment here: https://brainly.com/question/23469197

#SPJ1

Answer:

(Question) Which statement about mass is correct?

(Answer)  Mass is the measure of the amount of matter in an object.

(Question) A student designs a gravity experiment. She will time how long it takes different objects to fall from her school’s roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment’s design?

(Answer)  The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.

(Question) Which statement about gravity is correct?

(Answer)  Gravity is a force that attracts objects with mass toward each other.

(Question) A team of students performs an experiment to test the effect of gravity on different objects with the same mass. They measure how long it takes the objects to fall from the top of the school’s bleachers. How can they insure they get accurate data?

(Answer) by repeating the experiment several times

(Question) Students analyze their data from a gravity experiment. They find that objects fall at a greater speed from a greater height than from a lower height. What can they conclude?

(Answer)  The longer an object falls, the more gravity increases its speed.

Explanation:

i just finished the quick check. enjoy

What is the gas pressure within a cylinder if there is 5.0 g of co2 gas in a 10 L cylinder at 25 OC inside it?

Answers

Answer:

P V = N R T      Ideal gas equation

1 mole CO2 = 12 + 32 = 44 g

5 g = 5 / 44 = .114 moles

One definition of R is R = .08207 L-Atm / mole-deg K

P = .114 * .08207 * 298 / 10 = .279 Atmosphere

One needs to use care in using R in terms of other values given

can anyone help? thanks.. physics Light​

Answers

Light travels in straight lines. This explains how shadows are formed on sunny days, how images are formed in cameras, and why there are  reflection in mirrors.

What is reflection?

When two different media come together at an interface, a wavefront might change direction so that it returns to the first medium, which is termed as reflection. The reflection of light, sound, and water waves are typical examples. According to the law of reflection, the angle at which the wave incident on the surface equals the angle at which it is reflected for specular reflection (such as at a mirror).

You cannot see something unless you have 'line of sight' and the light can travel from the object to your eye in  straight line. Light waves are one of the ways that energy from the Sun reaches the Earth.

To know more about Light visit

https://brainly.com/question/10507280

#SPJ1

Suppose you are choosing between two roads. The first route is 70 miles at 55 mph, and the second road is 85 miles at 65 mph. Which route would get you there faster, and in what amount of time?.

Answers

As a result, the first path would take 1 hour, 18 minutes to get you there.

What is the word for amount of time?

Duration is the whole time that anything exists. A duration might be short, like the duration of a party, or it can be extensive, like the length of a lecture series. The time it takes to finish anything has come to be denoted by the term duration. Except for noon and midnight, use numerals for the times; separate the hours and minutes with a colon; and avoid using cyphers (double zeros) for complete hours.

It would take around 1 hour and 18 minutes to travel the first route, which is 70 miles long and travels at 55 mph. It would take around 1 hour and 21 minutes to travel the second route, which is 85 miles long and travels at a speed of 65 mph.

To know more about Amount of time visit:

https://brainly.com/question/24078955

#SPJ4

If a photon has a frequency of 5.20 x 1014 hertz, what is the energy of the photon? Given : Planks constant is 6.63 x 10 -34 joule.seconds

Answers

The energy of the photon can be calculated using the equation E = h * f, where E is the energy, h is Planck's constant (6.63 x 10^-34 Js), and f is the frequency of the photon (5.20 x 10^14 Hz). Plugging in the values, we get:

[tex]E = (6.63 x 10^-34 Js) * (5.20 x 10^14 Hz) = 3.48 x 10^-19 J[/tex]

How does the energy of a photon change as its frequency increases?

The energy of a photon is directly proportional to its frequency. As the frequency of a photon increases, so does its energy. This relationship is described by the equation E= hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon. Therefore, if the frequency of a photon increases, the energy of that photon will also increase. This is why high-frequency photons, such as X-rays and gamma rays, have higher energies than low-frequency photons, such as radio waves.

To know more about Frequency visit: https://brainly.com/question/29739263

#SPJ1

Which example shows Pascal's principle?
O a hydraulic jack
O the wing of an airplane
O a pulley
O a wind tunnel

Answers

Which example shows Pascal's principle a hydraulic jack .

What is a hydraulic jack?

A hydraulic jack is a device used to lift heavy objects or materials by using a hydraulic cylinder to generate a large amount of force. It works by using a pump to transfer fluid from a reservoir into a cylinder, which in turn applies pressure to a piston.

When the pressure is high enough, the piston will push against the object it is lifting, allowing the user to raise or lower the object. Hydraulic jacks are often used for automotive repair, construction, and other heavy-lifting applications.

To learn about more hydraulic jack.

https://brainly.com/question/19165750

#SPJ1

Which type of resource is solar energy ?(a) Exhaustible resource (b) Soil resource(c) Biotic resource(d) Non-exhaustible resourcencit​

Answers

The solar energy is  Non-exhaustible resource​. Hence, option (d) is correct.

What  renewable resource?

A natural resource that can be replenished to replace the portion used up by usage and consumption is known as a renewable resource, also known as a flow resource. This replenishment can occur naturally through reproduction or through other recurring processes in a limited amount of time on a human time scale.

The natural environment of the Earth and the main elements of its ecosphere are renewable resources. A resource's sustainability can be determined in large part by looking at its life-cycle assessment.

Learn more about   renewable resources here:

https://brainly.com/question/19048855

#SPJ1

Dwayne filled a small balloon with air at 298.5 K. He put the balloon into a bucket of water, and the water level in the bucket increased by 0.54 liter.

If Dwayne puts the balloon into a bucket of ice water at 273.15 K and waits for the air inside the balloon to come to the same temperature, what will the volume of the balloon be? Assume the pressure inside the balloon doesn’t change. Round to the nearest hundreth.

The volume of the balloon at 273.15 K is _____ liters.

Answers

The volume of the balloon will be 0.494 liters.

What is volume?

Volume is described as a measure of three-dimensional space which  is often quantified numerically using SI derived units or by various imperial or US customary units.

We will use Charles law to solve for the volume and it states that  the volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

Mathematically V1 / T1 = V2/ T2

where,

v1 = initial volume of gas = ?

v2 = final volume of gas = 0.54 L

T1 = initial temperature of gas = 273.15 K

T2 = final temperature of gas = 298.5 K

Substitute all the given values in the above equation, we get the initial volume of balloon.

V1 / 0.54 = 273.15/ 273.15

v1 = 0.494 liters.

Learn more about volume at:

https://brainly.com/question/463363

#SPJ1


A ball has a momentum of 5 kg m/s before it hits a block of wood which is at rest. After the collision, the ball is at rest. What is the final momentum of the block?
I NEED AN ANSWER FAST!!!

Answers

A ball has a momentum of 5 kg m/s before it hits a block of wood which is at rest. After the collision, the ball is at rest. the final momentum of the block remains constant as per the law of conservation of momentum.

What is the law of conservation of momentum ?

As per the law of conservation of momentum, The complete momentum of two or more bodies acting on one another in an isolated system remains constant unless an external force is applied.

Hence, as per the statement given there is no external force is applying so, the final momentum of the block is equal to ball's momentum and remains constant.

To know more about law of conservation of momentum visit

https://brainly.com/question/24131537

#SPJ1

Scenario
Consider a coin of massm placed on a rotating surface a
distance R from the axis of rotation. The surface rotates with a
period T. There are some locations on the surface where the coin
can be placed and the force of static friction will not allow the com
to slip. At other locations, the coin will slip because static friction or
not strong enough to present the coin from slipping. The coefficient
of static fraction between the coin and the surface is u

Answers

The coefficient of the static friction(ц) between the coin and the surface is v²/gR.

The mass of the coin = m kg

The distance of the coin from the axis of rotation = R meter

Let the speed of the rotating surface = v m/sec

We know that an object moving in a circular motion on a circular path of radius R, experiences a centrifugal force which acts outwards from the axis of rotation. This force is determined by the following formula,

F = mv²/R

This force is balance by the static friction force on the coin.

Static friction force on the coin = mg × static friction(ц)

mv²/R = mg × static friction(ц)

Static friction(ц) = v²/gR

To know more about static friction, here

https://brainly.com/question/24882156

#SPJ4

The specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of the substance by the mass of the sample and by the change in temperature. The heat capacity of a certain substance has been measured to be. Suppose of the substance are heated until the temperature of the sample has changed by. Write an equation that will let you calculate the heat that was needed for this temperature change. Your equation should contain only symbols. Be sure you define each symbol.

Answers

An equation that will let you calculate the last Q that was needed for this temperature change is Q = MCΔT.

The following formula can be used to determine how much heat is required to cause a change in temperature:

Q = MCΔT

Where:

The required heat, Q, is expressed in joules (J).

M is the substance's mass, expressed in grams (g)

C is a substance's specific heat capacity expressed in J/g°C.

T is the change in temperature expressed in degrees celsius (°C).

As a result, we can determine how much heat is required to change the temperature as follows:

Q = MCΔT

Q = 420 x 3.52 x 43.8

Q = 64753.92 J

Thus, 64753.92 J of heat are required to change the temperature.

Your question is incomplete but most pprobably your full question was

The specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of the substance by the mass of the sample and by the change in temperature. The specific heat capacity of a certain substance has been measured to be 3.52 J/g °C. Suppose 420.0 g of the substance is heated until the temperature of the sample has changed by 43.8 °C.

Write an equation that will let you calculate the last Q that was needed for this temperature change. Your equation should contain only symbols. Be sure to define each symbol.

Learn more about specific heat capacity at https://brainly.com/question/29766819

#SPJ4

Radius of curvature of human eye is 0.78 cm. For an object at infinity, image is formed at 3 cm behind the
Tetracting surface. The refractive index of eye is:

Answers

The refractive index of the eye cannot be determined with the information provided.

What is the refractive index of the eye,n ?

This refers to the value obtained from the ratio of the speed of light in a vacuum to that in a second medium of greater density.

The refractive index is also equivalent to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance.

It can be calculated using the formula:

n = c/v.

where,

n = the refractive index of the eye

c = wavelength in empty space

v = the  velocity of light

From the question:

r = 0.78 cm

i = 3 cm

The radius of curvature and the location of the image formed by an object at infinity is related to the eye's optics, but the refractive index also depends on the materials of the various parts of the eye, such as the cornea and lens.

Hence, the refractive index can also vary depending on the specific wavelength of light being considered.

Learn more about refractive index on

https://brainly.com/question/23750645

#SPJ1

What is the formula of a magnitude?

Answers

The formula of a magnitude is  |v| =√(x2 + y2)

A vector formula's magnitude can be used to condense the numerical value of a particular vector. A vector has a magnitude and a direction. This magnitude of a vector formula provides a summary of the individual vector measurements along the x, y, and z axes. The symbol for it is |v|.

|v| =(x2 + y2) is the formula to calculate the magnitude of a vector (in two dimensions) v = (x, y). The Pythagorean theorem serves as the basis for this formula.

|V| = (x2 + y2 + z2) is the formula to calculate the magnitude of a vector (in three-dimensional space) V = (x, y, z).

You can also learn about magnitude from the following question:

https://brainly.com/question/14452091

#SPJ4

What are the domain and range of the function f(x) = 4(rootindex 3 startroot 81 endroot) superscript x?.

Answers

The domain of that function is a real number or can be written as {x | x is a real number}. The range of that funciton is {y | y > 0}.

How to find the domain and range of that function?

Domain is all possibly value of "x" for a function to keep functional. In short, domain is a parameter of the function to work.  By its definition, domain is a real number or in math written as {x | x is a real number}

As per given function f(x) = 4(3√81)ˣ. Because of there is no negative sign in the formula, The value of f(x) has to be greater than zero. So, f(x) > 0 or y > 0. Range = {y | y > 0}

Learn more about domain here

https://brainly.com/question/2264373

#SPJ4

Calculate the amount of energy required to escape from the surface of the following bodies, relative to that required to escape from the surface of Earth.
(a) Venus
_____ energy to escape Earth
(b) the Sun
_____ energy to escape Earth

Answers

The amount of energy required to escape from the surface are:

(a) Venus: about 40,250 m/s, or 0.9 times the energy required to escape Earth(b) the Sun: about 617,250,000 m/s, or 2 x 10^5 (two hundred thousand) times the energy required to escape Earth.

Venus's Energy to Escape Earth

To calculate the energy required to escape from the surface of relative to that required to escape from the surface of Earth, we can use the formula for escape velocity (Ve) which is:

Ve = √(2GM/R)

Where G is the gravitational constant, M is the mass of the celestial body and R is its radius.

First, we need to calculate the escape velocity of Venus (VeV) and Earth (VeE) using the formula above:

VeV = √(2GM_V/R_V)VeE = √(2GM_E/R_E)

And the ratio of VeV/VeE = √(M_V/R_V) / √(M_E/R_E)

Given the mass of Venus is 4.87 x 10^24 kg and radius of Venus is 6.0518 x 10^3 km, we can calculate the ratio of Venus escape velocity over Earth escape velocity:

VeV/VeE = √(4.87 x 10^24 / 6.0518 x 10^3) / √(5.97 x 10^24 / 6.371 x 10^3) VeV/VeE = 0.9

So the energy required to escape from the surface of Venus relative to that required to escape from the surface of Earth is about 0.9. This means that Venus escape velocity is 90% of the energy required to escape Earth.

To calculate the escape velocity of Venus in m/s, we can use the same formula:

Ve = √(2GM/R)

Where G is the gravitational constant (G = 6.67 x 10^-11 Nm^2/kg^2), M is the mass of Venus (M = 4.87 x 10^24 kg) and R is its radius (R = 6.0518 x 10^3 km). Hence:

Ve = √(2 * 6.67 x 10^-11 Nm^2/kg^2 * 4.87 x 10^24 kg) / 6.0518 x 10^3 km)Ve = √(2 * 6.67 x 10^-11 * 4.87 x 10^24 ) / 6.0518 x 10^3Ve = √(5.88 x 10^14) / 6051.8Ve = 40250 m/s

The Sun's Energy to Escape Earth

Given the mass of the Sun is 1.989 x 10^30 kg and radius of the Sun is 6.963 x 10^8 meters, we can calculate the ratio of the Sun's escape velocity over Earth escape velocity:

VeS/VeE = √(1.989 x 10^30 / 6.963 x 10^8) / √(5.97 x 10^24 / 6.371 x 10^3) VeS/VeE = 2 x 10^5

So the energy required to escape from the surface of the Sun relative to that required to escape from the surface of Earth is about 2 x 10^5 (two hundred thousand) times the energy required to escape Earth. This means that the Sun's escape velocity is 200,000 times larger than the energy required to escape Earth.

To calculate the escape velocity of The Sun in m/s, we can use the same formula as Venus:

Ve = √(2 * 6.67 x 10^-11 Nm^2/kg^2 * 1.989 x 10^30 kg) / 6.963 x 10^8 m)Ve = √(2 * 6.67 x 10^-11 * 1.989 x 10^30 ) / 6.963 x 10^8Ve = √(5.3 x 10^20) / 6963000000Ve = 617,250,000 m/s

Learn more about escape velocity here: brainly.com/question/29911258

#SPJ4

POGIL - Energy of Option: The Effect of Mass and Speed (Student PS Activity 10) Answer key

Answers

Although mass does not directly affect speed, as an object's speed increases, so does its mass. The term "mass" refers to a thing's total amount of energy. Thus, we draw the conclusion that while a particle's mass increases with speed, its charge stays constant.

What is mass?

A thing's mass is the total amount of stuff or substance that constitutes it. The measurement unit is the kilogramme, also written as kg. It's important to remember that mass is distinct from weight. Mass never changes, whereas weight fluctuates as the centre of gravity shifts. The best way to understand mass is to think about how much matter each object or body is made up of. Everything that we can see has mass.

How do we measure mass?

A balance is used to determine an object's mass for the majority of commonplace objects. The balance compares the target object to a known mass object. Digital scientific balances and beam balances, like a triple beam balance, are examples of several sorts of balances.

To know more about Mass visit:

https://brainly.com/question/18064917

#SPJ1

What are the domain and range of FX =- 37?

Answers

The domain of f(x) = –37 is all the real numbers. And, the range of f(x) = –37 is y = –37.

The given function f(x) = –37 is a horizontal line which goes from negative infinity to positive infinity.

In this case, the domain can be any number since there is no limit on what the x value can be.

So, the domain of the given function f(x) = –37 will be all real numbers.

And, the range will always be y = –37 because no matter what x value will equal, y will always be equal to –37 in the function of f(x) = –37.

So, the range of the given function f(x) = –37 will be y = –37.

Learn more about domain and range at: https://brainly.com/question/28135761

#SPJ4

Which sample of argon gas has the same number of atoms as a 100. -milliliter sample of helium gas at 1. 0 atm and 300. K?.

Answers

Answer:

one mole of each gas has the same number of molecules (Avogadro's No)

i mole He = 4 grams

1 mole Argon = 38 grams

1 mole Argon / 1 mole He = 9.5

one would need 950 ml of Ar gas

When working with a hybrid vehicle HV What are some safety precautions that need to be taken?

Answers

When working with a Hybrid Vehicle (HV), there are certain safety precautions that must be taken in order to ensure the safety of you and your vehicle. First and foremost, make sure you read and understand the vehicle’s owner's manual before attempting to operate the vehicle.

This is the best source of information for understanding the safety features and operational guidelines for the HV.

Additionally, always use the correct size and type of tires, as stated in the owner’s manual. This will help to ensure optimal performance and safety. Additionally, inspect the brakes of the hybrid vehicle HV regularly, and make sure all lights and signals are working properly.

Finally, check the battery and make sure it is in good condition. Following these steps will help to ensure the safe and efficient operation of your HV.

To learn more about hybrid, click here:

https://brainly.com/question/14610495

#SPJ4

5. A roller coaster car accelerates at 8.0 m/s² for 4.0 s. What
is the change in the speed of the roller coaster car?

Answers

Answer:

monkey tunky funky luncky

The energy in the nucleus of atoms produce heat which Can be used to generate which energy ​

Answers

Nuclear energy is the energy in the nucleus, or core, of an atom. Nuclear energy can be used to create kinetic energy or electricity, but it must first be released from the atom.

What produces heat in Nuclear energy?

Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

What are main uses of Nuclear energy?

Some primary uses of nuclear energy are- Space Exploration, Nuclear energy provides nearly 20% of electricity in many countries like United States, Medical Diagnosis and Treatment, Criminal Investigation and Agriculture.

To know more about Nuclear energy, visit:

https://brainly.com/question/2240073

#SPJ1

Assuming the acceleration is the same for each of the following objects which will require more force to cause acceleration 0 a lion 0 a mouse 0 a dog 0 an elephant

Answers

Answer: Elephant

Explanation: Because of an elephants weight and size, it would require more force for acceleration when compared to a lion, mouse, and/or dog.

An full shopping cart with a mass of 100. kg is moving at 5.0 m/s and runs into a stationary shopping cart that is empty (30. kg). After the collision, the full shopping cart is moving at 2.7 m/s. What is the empty shopping cart moving at?

Answers

The empty shopping cart is moving at 7.67 m/s.

What is law of conservation of momentum?

According to the law of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.

Total initial momentum = total final momentum

100 kg ×5.0 m/s + 30 kg ×0 m/s = 100 kg ×2.7 m/s + 30 kg ×v

v = (5.0 - 2.7)(100/30) m/s

= 7.67 m/s.

Hence,  the empty shopping cart is moving at  speed of 7.67 m/s.

Learn more about momentum here:

https://brainly.com/question/17166755

#SPJ1

A thread holds two carts together on a frictionless surface. A spring is compressed between the two carts. After the thread between the two carts is cut the cart on the left with a mass of 1. 5 kg moves away with a velocity of 27 cm/s. What is the velocity of the cart on the right that has a mass of 4. 5 kg?.

Answers

The velocity of the cart on the right that has a mass of 4. 5 kg is 0.09 m/s.

Velocity is the rate of change of distance with respect to time.

It has the SI unit as m/sec.

Mass on the left of the cart = m1 = 1.5 kg

on the left of the cart = v1 = 27 cm/s = 0.27m/s

Mass on the right of the cart = 4.5 kg

Velocity on the right of the cart = x

According to the law of conservation of linear momentum:

We can say that.

Initial momentum will equalize the final momentum.

And momentum is the product of mass and its velocity.

Assigning one of its velocity as negative because both are in different direction.

mathematically, (m1*-v1) + (m2v2) = 0

(1.5*-0.27) + (4.4*x) = 0

x = 0.09 m/s

So the velocity of the cart on the right side that has a mass of  is 0.09 m/s.

To know more about velocity,

https://brainly.com/question/29153841

#SPJ4

19 kg rock 8m above ground what is potential energy of the rock

Answers

Answer:

1489.6 Joules

Explanation:

Potential Energy:

[tex] \displaystyle{\text{PE} = mgh}[/tex]

m is mass (kg), g is acceleration due to gravity which is 9.8 m/s² (some people use 10 m/s² which is acceptable) and h is height. Hence, substitute in known values:

[tex] \displaystyle{\text{PE} = 19 \times 9.8 \times 8} \\ \\ \displaystyle{\text{PE} =1489.6 \: \text{J}}[/tex]

Hence, the potential energy is 1489.6 Joules

Complete the following sentence. Overhead cables are often slack to allow them to __________ on hot days without breaking.

No fake answers please :,(

Answers

Answer:

Overhead cables are often slack to allow to expand on hot days without breaking.

Explanation:

They hang power lines with enough (even it seems tons!) slack to allow conductors to expand and contract due to the variations in ambient temperature and the current flowing through them. If strung tight, they will keep snapping causing the disruption in power flow.

Overhead cables are often slack to allow them to expand on hot days without breaking, as overhead cables, such as electrical power lines or communication cables, are exposed to various environmental conditions, including temperature fluctuations. Here option a is correct.

When temperatures rise, materials, including metals used in cables, tend to expand. This expansion can lead to increased tension and stress within the cable. If a cable is already under high tension and does not have room for expansion, it can potentially lead to structural damage or even breakage. To accommodate the expansion of the cables during hot weather, they are deliberately kept slack or loose. By allowing some slack in the cables, they have the flexibility to expand and contract with changes in temperature. This prevents excessive tension and reduces the risk of the cables becoming overstressed and breaking.

Learn more about overhead cables here.

https://brainly.com/question/33393997

#SPJ2

complete question is below

Complete the following sentence. Overhead cables are often slack to allow them to __________ on hot days without breaking.

a, expand

b, contract

Other Questions
14 = -2s -8Solve for s Solve 14p + 56 = 23 for p.Question 1 options:A) 124B) 38 C) 23D) 6 The buyer of a car pays Php 169,000 cash and Php 12, 000 every month for 5 years. If money is 10% compounded monthly, how much is the cash price of the car? A group of 50 students at a day camp got to choose an activity to do. 21chose to make a craft, 16 chose to play volleyball and 13 chose to go ona nature walk. What percent chose to make a craft? What act ensured that freemen accused of crimes had a right to a trial by a jury of their peers?A. Assize of ClarendonB. ParliamentC. Habeus corpusD. common law helppp! show your work How do you feel about not performing any additional lifesaving method on someone who doesn't respond to a second head tilt/chin lift? In other words - in emergencies we may not be able to perform CPR. A. Complete the table below by evaluating each expressionwith the given value of the variable. Use the back sheet ofthispaperfor your solution.m = -3m = 41. m - 52. 6m- + 8m - 163. 10 - 3m?4. m'+ 4m + 25. 8m - 3 You are supposed to place them in the order they are supposed to go in, that's all its asking. Need some help!! which orded pair is a solution of the equation 2x+4y=6x-y Sigma Corporation applies overhead cost to jobs on the basis of direct labor cost. Job V, which was started and completed during the current period, shows charges of $6,700 for direct materials, $9,500 for direct labor, and $6,270 for overhead on its job cost sheet. Job W, which is still in process at year-end, shows charges of $4,100 for direct materials and $4,100 for direct labor.Required:Calculate the overhead cost be added to Job W at year-end Which of the following statements is not true?-3.2 > -4.1-1.5 = -1.50-0.6 < 0.3-3.7 > -3.1 violet Baudelaire being protective of her siblings quotes WHOEVER IS RIGHT I PROMISE ON EVERYTHING I LOVE I WILL GET YOU 50 POINTS.!!!!!!Please help pleaseeee help i need to turn thiis in and i have no idea what it is!! Need helpWhat is the equation of a line that passes through the point (0, -2) and has a slope of -3?y = -2y = -2x - 3y = -3x - 2y = -3 please help me please please please What is the value of the expression 8x + 9 when x=7? What is the Plate Tectonics Theory? Cystic fibrosis is caused byO damaged alveoli.fluid-filled sinuses.O fever.Ogenes.